Players wonder about the free part of free agency

Entire story here

That risk is, of course, that the player will sign the one-year qualifying offer, suffer a career-ending injury and be forced from the game never really having cashed in on the benefits of unfettered free agency. Actually, no one can cite a franchise player to whom that has ever occurred. But the mere potential for such physical and fiscal catastrophe is sufficient reason, apparently, for virtually all players to disdain the franchise label.

I'd think that the chances of a player getting a career-ending injury during the "tagged" period is pretty damn slim. As it is, they're getting a guaranteed amount commensurate to the top 5(10?) of their position for as long as they're tagged.